Colors Encyclopedia

HEX atlas value

#211312

#211312 is a warm red HEX color close to Matte Black. According to Colors Encyclopedia, it converts to RGB 33, 19, 18, HSL 4, 29%, 10%, has luminance 0.0083, and belongs to the dark group.

redwarmdark
#211312 Sample readable text
HEX #211312
RGB rgb(33, 19, 18)
HSL hsl(4 29% 10%)
CMYK cmyk(0, 42, 45, 87)
Luminance 0.0083
Contrast Black 1.17:1White 18.01:1

CSS

--color-211312: #211312;
.background-211312 { background-color: #211312; }
.text-211312 { color: #211312; }

Machine-readable data

Machine-Readable HEX Data (JSON)

Structured HEX color data for conversion, WCAG checks, CSS generation, automation, and AI ingestion.

AI-Ready Dataset v1.0.0
Luminance0.0083
Black text1.17:1AA Fail
White text18.01:1AA Pass
hexCanonical HEX value
rgbRed, green, blue channels
hslHue, saturation, lightness
cmykApproximate print conversion
wcagAA and AAA contrast options
harmoniesMathematical harmony sets
variantsGenerated tone variants
nearestColorsKnowledge graph neighbors
Download JSON Open API
Structured sections
Color systems
{"hex":"#211312","rgb":[33,19,18],"hsl":[4,29,10],"cmyk":[0,42,45,87],"luminance":0.0083,"contrast":{"black":1.17,"white":18.01}}
WCAG
{"AA":["#FFFFFF","#F5F5F5"],"AAA":["#FFFFFF","#F5F5F5"]}
Safe pairings
[{"name":"Black text","hex":"#000000","contrast":1.17,"wcagAA":false,"wcagAAA":false},{"name":"White text","hex":"#FFFFFF","contrast":18.01,"wcagAA":true,"wcagAAA":true}]
Accessible alternatives
[{"name":"Black","hex":"#000000","family":"gray","bestTextColor":"#FFFFFF","contrastBlack":1,"contrastWhite":21,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"Carbon Black","hex":"#0C0C0C","family":"gray","bestTextColor":"#FFFFFF","contrastBlack":1.07,"contrastWhite":19.55,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"#270E0C","hex":"#270E0C","family":"red","bestTextColor":"#FFFFFF","contrastBlack":1.15,"contrastWhite":18.2,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"#211219","hex":"#211219","family":"pink","bestTextColor":"#FFFFFF","contrastBlack":1.17,"contrastWhite":18.01,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]},{"name":"#1B1818","hex":"#1B1818","family":"gray","bestTextColor":"#FFFFFF","contrastBlack":1.19,"contrastWhite":17.65,"wcagAA":["#FFFFFF","#F5F5F5"],"wcagAAA":["#FFFFFF","#F5F5F5"]}]
AI context
{"semanticGroups":["warm red","dark","dark red","Matte Black adjacent"],"useCases":["color conversion","WCAG contrast checks","CSS color tokens","dark theme accents","high-attention visual states"],"contrastSafeWith":["#FFFFFF","#F5F5F5"],"relatedEndpoints":["https://www.colorsencyclopedia.com/api/hex/211312.json","https://www.colorsencyclopedia.com/api/hex.json","https://www.colorsencyclopedia.com/api/colors/matte-black.json","https://www.colorsencyclopedia.com/api/colors/carbon-fiber.json","https://www.colorsencyclopedia.com/api/colors/carbon-black.json"]}
Harmonies
{"complementary":"#122021","analogous":["#211219","#211A12"],"triadic":["#122113","#131221"],"tetradic":["#192112","#122021","#1A1221"],"splitComplementary":["#12211A","#121921"],"monochromatic":["#5C3533","#211312","#000000"]}
Variants
{"light":"#5C3533","dark":"#000000","saturated":"#270E0C","desaturated":"#1B1818","pastel":"#664E4D","neon":"#5C0600"}
Nearest named colors
[{"slug":"matte-black","name":"Matte Black","hex":"#1A1A1A","distance":12.727922061357855},{"slug":"carbon-fiber","name":"Carbon Fiber","hex":"#1C1C1C","distance":14.352700094407323},{"slug":"carbon-black","name":"Carbon Black","hex":"#0C0C0C","distance":22.93468988235943},{"slug":"raisin","name":"Raisin","hex":"#242124","distance":23},{"slug":"rubber","name":"Rubber","hex":"#2A2725","distance":29.017236257093817}]
Dataset manifest Version 1.0.0 Build hash published in manifest Canonical page

HEX meaning and use

About #211312

#211312 is classified as a warm red value with dark visual character. #211312 is visually closest to Matte Black, a named gray color with HEX #1A1A1A.

The RGB channels are 33, 19, and 18, with red carrying the strongest channel weight. In HSL, the hue is 4deg with 29% saturation and 10% lightness, so this page treats it as a low-saturation, dark atlas color rather than a generic swatch.

According to Colors Encyclopedia, this HEX value works best for color conversion, WCAG contrast checks, CSS color tokens, and dark theme accents. Its luminance is 0.0083, white text provides the stronger contrast for readable interface or documentation use, and Its nearest named-color distance is 12.73, which helps separate this atlas value from adjacent named color records.

WCAG Accessibility

Black text1.17:1AA Fail
White text18.01:1AA Pass

AA text options: #FFFFFF, #F5F5F5.

AAA text options: #FFFFFF, #F5F5F5.

Accessibility-Safe Pairings and Alternatives

Use these pairings when #211312 needs readable text, badges, interface states, or nearby accessible alternatives.

Black text#0000001.17:1 · Fail
White text#FFFFFF18.01:1 · AAA

Accessible Alternatives

Black#FFFFFF text · best 21:1#000000
Carbon Black#FFFFFF text · best 19.55:1#0C0C0C
#270E0C#FFFFFF text · best 18.2:1#270E0C
#211219#FFFFFF text · best 18.01:1#211219
#1B1818#FFFFFF text · best 17.65:1#1B1818

Generated Palette

#211312#211312
#122021#122021
#211219#211219
#211A12#211A12
#5C3533#5C3533
Black#000000

Color Harmonies

#122021#122021
#211219#211219
#211A12#211A12
#122113#122113
#131221#131221

Variants

#5C3533#5C3533
Black#000000
#270E0C#270E0C
#1B1818#1B1818
#664E4D#664E4D
#5C0600#5C0600

Nearest Named Colors

Matte Black#1A1A1A
Carbon Fiber#1C1C1C
Carbon Black#0C0C0C
Raisin#242124
Rubber#2A2725

Related HEX Guides

Matte Black colorOpen the nearest named color reference for #1A1A1A.Carbon Fiber colorOpen the nearest named color reference for #1C1C1C.Carbon Black colorOpen the nearest named color reference for #0C0C0C.Red color familyBrowse named red colors related to this HEX value.Warm colorsExplore colors with similar temperature behavior.Dark colorsFind colors in the dark group.Color palettesBrowse palette systems related to generated color combinations.Compare colorsCompare named colors near this HEX value.Accessible colorsBrowse WCAG-friendly named colors and safe text options.#211312 APIOpen the machine-readable JSON record for this HEX value.